What type of vent is used with 90 percent Category IV furnaces? ...

[kshipps]

What type of vent is used with 90 percent Category IV furnaces?
 
  A) Single-wall stainless steel
  B) Type B double-wall gas vent
  C) 90 percent efficiency furnaces do not require a vent.
  D) PVC

Question 2

Where is the refrigerant piping run from a rack system to the individual refrigerated cases?
 
  A) Through an exterior wall
  B) In trenches under the floor
  C) Refrigerant piping is not necessary because rack systems are self-contained.
  D) On top of the floor under a protective metal cover

[Ddddd]

Answer to Question 1

D

Answer to Question 2

B

[kshipps]

Thanks for the timely response, appreciate it

[meganmoser117]

Excellent